It'll take us a while longer to 'iron out' the wrinkles/kinks in the network. [=to fix the small problems in the network]
Although he won't say exactly what he's working on now, he says he has quite a few 'irons in the fire'.
You had better have a 'cast-iron' [=('US') 'airtight'] excuse for missing the meeting.
(..) Do you know when you'll be home? All right. Bye, Mum. (THATCHER SPEAKING INDISTINCTLY ON TV) (LAUGHTER ON TV) THATCHER: (ON TV) Yes, I am an iron lady. The Iron Lady of the Western world. (CHANNELS CHANGING) (LAUGHTER ON TV) No, no. You are a bad one, you know, you. (..)2016 The Conjuring 2